Gulfport Energy Corp

GPOR

Exchange: NYSE
Industry: Crude Petroleum & Natural Gas
SEC CIK: 0000874499

SEC filings (opens in a new tab)

In the last 90 days, Gulfport Energy Corp insiders filed 1 open-market purchase and 2 sales; 291 institutions reported holding it in 13F filings for Q2 2026, worth $3.58B in total; no superinvestor holds it.

Q4 2025 vs. Q3 2025

How the institutions holding Gulfport Energy Corp changed between Q3 2025 and Q4 2025.

All holders in Q4 2025 All holders in Q3 2025

13F holders of GPOR: Q3 2025 compared with Q4 2025
Measure	Q3 2025	Of which not filed for Q4 2025	Q4 2025	Change
Holders	294	4	307	+17
Shares	21.6M	6.54K	20.1M	−1.50M (−6.9%)
Value	$3.91B	$1.18M	$4.18B	+$273.1M (+7.0%)

4 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so the changes leave them out.

New holders (50)

Institutions that held Gulfport Energy Corp at the end of Q4 2025 but not at the end of Q3 2025.

Institutions new to GPOR in Q4 2025
Institution	Shares	Value	% of portfolio
Nomura Asset Management International Inc.	488,166	$101.5M	0.15%
Ninepoint Partners LP	200,000	$41.6M	4.94%
Rice Hall James & Associates, LLC	20,238	$4.21M	0.23%
Renaissance Technologies LLC	20,100	$4.18M	0.01%
Allspring Global Investments Holdings, LLC	12,018	$2.48M	0.00%
Graham Capital Management, L.P.	10,858	$2.26M	0.08%
Caxton Associates LLP	10,061	$2.09M	0.04%
Voloridge Investment Management, LLC	4,274	$888.9K	0.00%
Aquatic Capital Management LLC	4,210	$875.6K	0.02%
Erste Asset Management GmbH	3,600	$772.4K	0.01%
Engineers Gate Manager LP	3,641	$757.3K	0.01%
denkapparat Operations GmbH	3,004	$624.8K	0.34%
Jane Street Group, LLC	2,447	$509.0K	0.00%
Two Sigma Advisers, LP	2,400	$499.2K	0.00%
Massar Capital Management, LP	2,030	$422.2K	0.08%
Glenmede Trust Co NA	1,777	$369.6K	0.00%
Round Rock Advisors, LLC	1,656	$344.4K	0.05%
State of Tennessee, Treasury Department	1,600	$326.7K	0.00%
Neuberger Berman Group LLC	1,366	$284.1K	0.00%
Merit Financial Group, LLC	1,171	$243.6K	0.00%
CWA Asset Management Group, LLC	1,162	$241.7K	0.01%
Buckingham Strategic Partners	1,162	$241.7K	0.00%
Connor, Clark & Lunn Investment Management Ltd.	1,156	$240.4K	0.00%
Aigen Investment Management, LP	1,122	$233.4K	0.05%
Marshall Wace, LLP	1,100	$228.8K	0.00%
CIBC World Markets Corp	1,054	$219.2K	0.00%
EP Wealth Advisors, LLC	1,036	$215.5K	0.00%
Bridgeway Capital Management, LLC	1,000	$208.0K	0.00%
Atria Investments LLC	983	$204.5K	0.00%
SBI Okasan Asset Management Co.Ltd.	700	$150.2K	0.01%
Simplex Trading, LLC	419	$87.1K	0.00%
Kestra Advisory Services, LLC	261	$54.3K	0.00%
Eurizon Capital SGR S.p.A.	100	$21.3K	0.00%
DV Trading LLC	100	$20.8K	0.00%
University of Texas/Texas Am Investment Managment Co	74	$15.4K	0.00%
Kemnay Advisory Services Inc.	46	$9.57K	0.00%
Brown Brothers Harriman & Co	41	$8.53K	0.00%
Pinnacle Wealth Planning Services, Inc.	36	$7.49K	0.00%
Acumen Wealth Advisors, LLC	16	$3.33K	0.00%
Keating Financial Advisory Services, Inc.	14	$2.91K	0.00%
Optima Capital LLC	9	$1.87K	0.00%
Hughes Financial Services, LLC	4	$832	0.00%
Cornerstone Financial Management LLC	4	$832	0.00%
Jones Financial Companies LLLP	3	$624	0.00%
Marquette Asset Management, LLC	3	$624	0.00%
Bare Financial Services, Inc	3	$624	0.00%
ROSS\JOHNSON & Associates LLC	3	$624	0.01%
UMA Financial Services, Inc.	2	$416	0.00%
Ronald Blue Trust, Inc.	2	$416	0.00%
TD Private Client Wealth LLC	1	$208	0.00%

Sold out (33)

Institutions that held Gulfport Energy Corp at the end of Q3 2025 and filed for Q4 2025 without it.

Institutions that sold out of GPOR in Q4 2025
Institution	Shares, Q3 2025	Value, Q3 2025
Macquarie Group Ltd	505,768	$91.5M
Alyeska Investment Group, L.P.	112,236	$20.3M
Woodline Partners LP	82,852	$15.0M
Pacer Advisors, Inc.	74,140	$13.4M
Algert Global LLC	43,491	$7.87M
Yaupon Capital Management LP	39,287	$7.11M
Clark Capital Management Group, Inc.	32,245	$5.84M
Empowered Funds, LLC	13,974	$2.53M
CastleKnight Management LP	13,500	$2.44M
Thomist Capital Management, LP	11,300	$2.04M
Y-Intercept (Hong Kong) Ltd	10,598	$1.92M
Capstone Investment Advisors, LLC	6,164	$1.12M
Jump Financial, LLC	5,562	$1.01M
Brevan Howard Capital Management LP	5,202	$941.5K
DRW Securities, LLC	4,717	$856.1K
Perbak Capital Partners LLP	4,265	$771.9K
Mitsubishi UFJ Trust & Banking Corp	2,542	$460.1K
GTS Securities LLC	2,335	$422.6K
Jain Global LLC	1,864	$337.3K
Quantedge Capital Pte Ltd	1,800	$325.8K
Lombard Odier Asset Management (USA) Corp	1,607	$290.8K
Henshaw Capital LLC	1,448	$262.1K
Walleye Capital LLC	1,415	$256.1K
Aster Capital Management (DIFC) Ltd	820	$148.4K
Federated Hermes, Inc.	222	$40.2K
Principal Securities, Inc.	203	$36.7K
Advisory Services Network, LLC	154	$27.9K
Global Retirement Partners, LLC	85	$15.4K
Mather Group, LLC.	20	$3.62K
Tortoise Investment Management, LLC	4	$724
Fifth Third Bancorp	3	$543
Wealthspire Advisors, LLC	3	$543
Cloud Capital Management, LLC	3	$0

Not filed for Q4 2025 yet (4)

Institutions that held Gulfport Energy Corp at the end of Q3 2025 and haven't filed a 13F for Q4 2025. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding GPOR in Q3 2025 that haven't filed for Q4 2025
Institution	Shares, Q3 2025	Value, Q3 2025
Wolverine Trading, LLC	3,057	$550.8K
Glenmede Investment Management, LP	1,765	$319.4K
CIBC Bancorp USA Inc.	1,698	$307.3K
Hemington Wealth Management	18	$3.00K